Blower for boilers.



J. O. BENNETT.

.7 BLOWER FOR BOILERS.

APPLICATION FILED NOV. 26. 1913.

Patented May 5, 19%

3 SHEETS-SHEET 1;

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J. C. BENNETT.

BLOWER FOR BOILERS.

APPLICATION FILED NOV. 26, 1913.

Patented May 5, 1914.

3 SHEETS-SHEET 2.

J. C. BENNETT.

BLOWER FOR BOILERS. APPLICATION FILED Nov.2s.191s.-

1,095,991. PatentedMayfglQl l.

3 SHEETS-SHEET 3.

TE S1" JAMES C. BENNETT, 0F DETROIT, MICHIGAN, ASSIG-NOB OF ONE-HALF T'O GORDON G. BENNETT, OFDETROIT. MICHIGAN.

IBLQWER FOR BOILERS.

Specification of Letters Patent.

Patented May 5, 1%14.

Application filed November 26, 1913. Serial No. scalar.

To (ZZZ whom it may concern Be it known that I, Jaarns C. BENNETT, a citizen of the United States of America, residing at Detroit, in the county of lVayne and State of Michigan, have invented-certain new and useful Improvements in Blowers for Boilers, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to steam blowers for boilers, and more particlularly to soot cleaners especially adapted for use in cleaning the flues of horizontal boilers.

The primary object of my invention is to provide a soot cleaner particularly adapted for use in the forward end of a boiler, for delivery of a soot cleaning agent in the nature of a gaseous fluid, such as steam, to the fire tubes of the boiler in a line with the draft of said fire tubes, the cleaner being so mounted as to be shifted to cover the entire flue area of the boiler, and so mounted that it can be swung to provide, sutlicient clearance whereby repairs can be made in connection with the boiler or the blower when necessary.

Another object of this invention is not only to remove soot, incrustations, and foreign matter from the fire tubes of aboiler, but to enable the work to be done while the boiler is steaming or in use and without the necessity of OPQIIIIIO any portion of the casing or setting of t- 1e boiler, which opening would allow of the escape of heat.

My invention, in its broadest aspect, involves positive and reliable means, in a manner 'as hereinafter set forth, for expeditiously subjecting the interior of fire tubes or fines to the action of steam under pressure, whereby soot, ashes and incrustations are removed from the walls of the flues.

To this end I have devised a blower embodying a plurality of. structural elements which when combined, provide a durable, easily installed and quickly operated machine for increasing the efiiciencyof a steam boiler or generator.

The principal elements of the invention-- namely, boiler connections, a cam and transmission frame, and a pivoted reciprocatory jet head, together with certain modifications, will be hereinafter separately and specifically described in detail, together with the novel arrangement and objects acco1nplislied from such combinations of element-5.,

trating the same at the forward end of a horizontal boiler; Fig. 2 is a plan of the blower; Fig. 3 is a front elevation of a portion of a boiler setting or doors provided with connections for the blower; Fig. 4 is a horizontal sectional view of the blower; Fig. 5 is a side elevation of a blower illustrating a modification of the invention; Fig. 6 is a front elevation of the same partly broken away and partly in section; Fig. 7 is a plan of a modified form of blower, and Fig. 8 isa detail sectional view of a portion of the blower.

In describing my invention by aid of the drawings above referredto I desire to point out that I intend said views as merely illustrative of an example whereby my invention may be applied in practice, and I do not limit my'claims to the precise arrangement and construction of parts indicated. The following description is therefore to be construed broadly 'as'including substitute arrangements and constructions which are the obvious equivalent of those shown;

i Considering the boiler connections, the reference numeral 1 denotes a boiler setting or front wall having hinged doors 2 and 3 permitting of easy access being. had to the front end of a boiler 4 and the dues or tubes 5 thereof. The meeting or confronting edges of the doors 2 and 3 are cut away to provide an opening 6, said opening providing clearance for a tubular supporting member or pipe 7 which is mounted in the end of a bracket 8, carried by the inner side of the door 3, adjacent to the opening 6. The bracket 8 is riveted or otherwise secured to the door 3 and the outer end of said bracket has a detachable clamping section 9 which permits of the snpportingmember 7 being removed. The outer end of the tubular supporting member 7 has a T-connection 10, with one end thereof plugged, as at 11, and the oppositeend thereof provided with feedpipe 12 connected by'an elbow 13 and a coupling 14 to a steam supply pipe 15. The steam supply' pipe 15 is in vertical alinement with the hinge members 16 of the door 3, and the coupling 1 1 is of the ordinary and well known type which permits of the" feedpipe l2f-swinging in ahorizontal, plane, which is necessary when the door 3 is open. I

Considering now the cam and transmission frame, said frame comprises a member 17 connected by spacer-bolts 18 or other fastening means to the apertured lugs 19 of a coupling 20 mounted upon the inner end of the tubular support 7 The member 17 has vertical arms 21 and 22 and laterally extending arms 23, said arms having the outer ends thereof connected to the lower end of the arm 22 by a frame 24, which is substantially W-shaped in elevation. In other words, the frame 24 has portions disposed at an obtuse angle to the arms 23 and 22 and at an acute angle relatively to each other, said frame being disposedin a verti cal plane parallel witli'the end of the boiler 4. The angularly disposed portions of the frame 24 have a continuous slot 25 extending I from the outer end of one of the arms 23 throughout the length of said frame to the outer end of the other arm 23, said slot providing cam surfaces or guide ways to which I will advert in connection with the pivoted reciprocatory jet head. The front and rear sides of the arms 23 and the frame 24 are reinforced by stiffening ribs 26, the ribs 26 of the frame 24 being arranged in parallelism at the edges of the slot 25, whereby the inner walls of said ribs will cooperate with the walls of the slot in providing the cam surfaces or guide ways.

Journaled in the upper end of the arm 21 is. a shaft 27, said shaft extending longitudinally above the supporting member 7 and through the opening 6 of the doors 2 and 3, said shaft having the outer end thereof j ournaled in a bearing 28 provided therefor on the T-connection 10. The outer end of the shaft 27 has a hand wheel 29 provided with a crank 30, said hand wheel constituting a convenient manually operated means for imparting movement to the shaft 27. The inner end of the shaft 27 has a large sprocket wheel '31 and cooperating with said sprocket wheel in supporting an endless sprocket chain 32 are small sprocket wheels or idlers 33, S4 and 35. The sprocket wheels 33 are revolubly supported by the outer ends of the arms 23 and the sprocket wheels 34 are revolubly supported at the lower ends of the frame 24, while the sprocket wheel 35 is revolubly supported at the lower end of the arm 22. The sprocket wheels are located at the rear side of the transmission frame and are disposed whereby the sprocket chain 32 trained over said wheels is caused to travel in proximity to the slot 25 and longitudinally of said slot to serve functionally as a carrier for an element to be hereinafter referred to that travels throughout the length of said slot.

Considering the pivoted reciprocatory jet head, said head comprises a tubular or hollow body 36 arranged in the front side of the transmission frame. The'body 36 has one end thereof closed, as at 37 and the opposite end thereof provided with a stuffing box 38 of the ordinary and well known type including an adjustable gland. The body 37, adjacent to the stufiing box 38, has a right angular tubular connection 39 loosely mounted in an opening 40 provided therefor in the member 17 of the transmission frame, said tubular connection extending into the coupling 20, carried by the end of the supporting member 7. The coupling 20 has a conventional form of stuflingbox 41 for establishing a non-leakable connection between the stationary coupling 20 and the end of the connection 39 which is loosely or rotatably held in said coupling. Secured upon the connection 39 of'the body 36 by a transverse pin 'or rivet 42 isa collar 43, said collar cooperating with the spacer bolts 18 in preventing the connection39 and the body 36 thereof from becoming accidentally displaced relatively to the transmission frame, when a gaseous fluid under pressure is admitted to the hollow body 36. v

Extending through the stuffing box 38 into the hollow body 36 is theinner end of a hollow reciprocatory arm 44 which can be circular, rectangular or otherwise shaped in cross section. As shown, the arm 44 is tubular and the outer end thereof is closed by a detachable cap 45. The outer end of the arni 44, at the front side thereof, is provided with a plurality of spaced jets or nipples 46, the space between the jets or nipples corresponding to the distance between centers of the flues or tubes 5 of the boiler 4.

Mounted transversely of the outer end of the arm 44 is a bolt 47 having a head 48 at the rear side of said arm. The bolt 47 is retained in the arm 44 by a nut 49 screwed upon the front end thereof, and the head 48 of said bolt has an extension 50 extending into and revolubly supporting a sleeve roller 51, which is also revolubly supported by. a stud 52 carried by the sprocket chain 32, as best shown in Fig. 8. The sleeve roller extends transversely of the slot 25 and is guided in its movement by the Walls of said slot, said sleeve roller constituting anti-frictional means for preventing any binding ac tion in the slot 25. I

It is thought best to consider the operation of the preferred form of construction before referring to the modification shown 'in Figs. 5, 6 and 7.

pivot connection 39 and the arm 44 reciprocated longitudinally of the hollow body. This is accomplished through the medium of the sprocket chain '32 and its guided connection with the arm 44, the shape of the slot 25 of the transmission frame being such that the arm44 is swung in front of all of the fines or tubes 5 of the boiler and steam discharged into said flues or tubes to remove soot and other foreign matter.

Reference will now be had to Figs. 5, 6 and 7 illustrating the modification of the blower. The reference numeral 53 denotes, by the way of an example, a boiler of the marine type havingasmoke box 54 provided with a hinged door 55 adapted to swing outwardly whereby easy access can be had to the interior of the smoke box. In this instance, a steam supply pipe 56 forms the pivot rod or pivotal connection of the hinge members 57 of the door 55. One end of the steam supply pipe 56 has a coupling 58 and the opposite end thereof extends through the upper edge of the hinged door 55 into the smoke box. The inner end of the pipe extends through. a stufiing box 59 into the right angular connection 60 of a hollow body 61 constructed upon the same principle as the hollow body 36 previously referred to. The connection 60 of the hollow body 61 is supported in a bearing 62 forming part of a bracket 63 bolted or otherwise secured to the inner side of the hinged door 55. The bearing 62 has a ver tical cam and transmission frame 64 provided with angularly disposed slots 65 and bearings 66 for revoluble sprocket wheels 67 and 68. Associated with the sprocket wheel 68 is a beveled gear wheel 69 meshing with a small beveled gear wheel 70 mounted upon the inner end of a shaft 71, journaled in bearings 72 and 73. The former is carried by the side of the frame 64 and the latter by the bracket 63, and the end of the shaft 71 protrudes from the outer side of the hinged door 55 and is provided with a hand wheel I 74 similar to the hand wheel 29 shown in Fig. 2 of the drawings. Slidablymounted in a stuffing box 75 forming part of the hollow body 61 is a right angular branch 76 of a hollow arm 77, said arm having the ends thereof closed by detachable caps 78 and the front side thereof providedwith spaced jets ornipples 79. Secured to the branch 7 6 of the hollow arm 77 is a carrier 80, which extends through the angularly disposed slot 65 and is connected to an endless sprocket chain 81 trained over the sprocket wheels 67 and (i8. sprocket chain through the medium of the elements 69 to 74 inclusive, the hollow body 61 is oscillated relatively to the bearin 62 and the branch 7 60f the hollow arm 7% is reciprocated longitudinally of .the hollow body 61. In this'manner, the- When movement is imparted to thehollow arm 77 is raised and lowered before the'open ends of the flues or tubes of the boiler 53, whereby steam or gaseous fluid from the pipe 56 will be discharged into the fiues or tubes to remove foreign matter.

In the preferred form of construction, the cam and transmission frame is disposed at right angles to the supporting member or boiler connections and the pivoted reciprocatory jet head arranged in parallelism with the transmission frame. In the compact arrangement shown as a modification, the principal elements are disposed in a plane at right angles to the front end of the boiler 53 and with the hollow arm '77 of a length corresponding to the length of the tube area, and the arm can be raised and lowered to inject steam into the various flues or tubes of the boiler. In either form, the blower is supported by and movable with the door of the boiler setting and the door or doors can be swung open without interfering with the steam connections or fittings.

To recapitulate, my invention is characterized by the following novel constructions and arrangements which contribute to the proper care and etliciency of a steam generator or boiler: First, an oscillatory head ha ving reciprocal steam ejecting means movable in a large area principally formed of the ends of boiler tubes or fiues. Second, a blower supported wholly by a movable elementof a boiler setting and provided with novel means operatable from the exterior of the boiler setting for shifting an ejector head in a prescribed path before a fine sheet. Third, a blower embodying a rigid equally balanced construction capable of withstanding the heat to which the same'is subjected in the smoke box or forward end of a boiler setting. The above are simply a few of the characteristics of my invention by which I increase the efficiency of a steam generator or boiler.

What I claim is 1. In a steam blower for boilers, connections movable with a door of a boiler, and movable means carried by said connections and having an irregular movement in front of a flue sheet for dis charging steam into the fiues of said sheet.

2. In a steam blower for boilers, steam connections movable with a door of the boiler, and means supported by said connections and reciprocal to and from said connections and adapted to discharge steam into the fluesof the boiler.

3. In a steam blower for boilers, steam connections, and oscillatory means support-- ed-by said steam connections and having a reciprocal element adapted to discharge steam into the flues of the boiler.

4. In a steam blower for boilers, movable steam connections, a transmission frame supported thereby, and oscillatory and re &

ciprocatory means simultaneously actuated through the medium of said frame for discharging steam into the flues of the boiler.

5. In a steam blower for boilers, movable steam connections, a transmission mechanism supported thereby, and oscillatory and reciprocal means simultaneously actuated by said mechanism and adapted to discharge steam into the flues of the boiler.

6. In a steam blower for boilers, movable steam connections, a transmission mechanism supported thereby, and a pivoted recip rocatory jet head actuated by said mechanism in a plane parallel to a flue sheet and adapted to eject steam.

7. In a steam blower for boilers, movable steam connections, a frame supported thereby, combined oscillatory and reciprocatory steam ejecting means supported by said frame, and means actuated exteriorly of a movable with a part of a boiler setting for supplying steam to said head.

10. In a. steam blower, the combination with a boiler flue sheet having flues, of a movable steam ejecting member shiftable in an irregular course in front of said flue sheet and adapted to discharge steam into the flues thereof, and means movable with a part of a boiler setting for shifting said movable steam ejecting head.

11. In a steam blower, the combination with a boiler flue sheet, of steam ejecting means having an irregular movement in parallelism with said sheet and manually actuated from the exterior of a boiler adapted to discharge steam into the tines of said flue sheet.

12. In a steam blower, the combination with a boiler flue sheet, of reciprocatory steam ejecting means adapted to discharge steam into the fines of said flue sheet and reciprocal in a plurality of directions relatively to the longitudinal axes of the flues of said sheet, and means movable with a part of a boiler setting for reciprocating and sup-- plying steam to said means.

13. In a, steam blower, the combination with a boiler setting and flue sheet, of a steam supplying and supporting member with a boiler setting and flue sheet, of a steam supplying and supporting member carried by said boiler setting, and steam ejecting means pivotally supported by said member in parallelism with said flue sheet and reciprocal relatively to its pivot and adapted to discharge steam into the flues of said sheet.

15. In a steam blower, the combination with a boiler setting and a flue sheet, of a steam supplying member supported by said boiler setting, and reciprocatory steam ejecting means carried by said member in parallelism with said flue sheet and adapted to have movement imparted thereto from the exterior of said boiler setting to reciprocate in various directions at right angles to the longitudinal axes of the fines of said sheet.

16. In a steam blower, the combination with a boiler setting and flue sheet, of a,

atable from the exterior of said boiler setting for imparting an irregular movement to said steam ejecting means.

17. In a steam blower, the combination with a boiler setting and a fluesheet, of a steam supplying member carried by said boiler setting, a frame carried by said member, movable steam ejecting means support: ed at said frame, and a flexible transmission carried by said frame and guided thereby for imparting movement in a desired direction to said steam ejecting means whereby said steam ejecting meansv is causedv to traverse the flue area of said flue sheet.-

18. In a steam blower, the combination with a boiler setting and flue sheet, of a steam supplying member carried by said boiler setting, a frame carried by said member, a steam ejecting arm reciprocal at said frame, a carrier gulded by said frame and the fines of said flue sheet, means carried by said frame for guiding a movement of said arm, and means movable with a part of said boiler setting for supplying steam to the first mentioned means.

20. In a steam blower, a steam supplying pipe, a frame supported thereby, an oscillatory body carried by said frame, a reciproeatory steam ejecting member movable in said body, and means carried by said frame adapted to simultaneously impart movement to said steam ejecting member and said body.

21. In a steam blower, a steam supply pipe, a frame disposed at an angle thereto, an oscillatory body supported by said frame and movable in a plane parallel with said frame, a reciproeatory steam ejecting member movable in said body, and means guided by said frame and conn cted to said member for simultaneously imparting movement to said member and said body.

22. In a steam blower, the combination with a fine sheet, of a steam supplyingpipe movable to and from said sheet, a steam ejecting arm movable in front of said sheet, an oscillatory body supplying steam to said arm and in communication with said steam supplying pipe, and means for imparting movement to said oscillatory body.

23. In a steam blower, the combination with a boiler setting and due sheet, of a steam supplying pipe movably supported by said boiler setting, a frame carried by said pipe in parallelism With. said flue sheet, amovable body in eommunication With said steam supplying pipe and movable in a plane parallel With said frame, a steam ejecting arm movable in said body and in communication therewith, a carrier connected to said arm-and guided by said frame, and manually operated means in proximity to said steam supplying pipe for imparting movement to said carrier whereby said arm is shifted in front ofsaid flue sheet.

24. In a'blower, a pivoted body, a jet arm movable longitudinally of said body, and means for simultaneously moving'said body on its pivot and the arm longitudinally of said body.

In testimony whereof I affix my signature in presence of two Witnesses.

JAMES C. BENNETT. /Vitnesses ANNA M. Donn, OTTO F. BARTHEL. 

